Added installation and license info into README

README.md

@@ -3,6 +3,11 @@ Editor plugin which allows plugin developers to quickly reference various `Theme
 
 Developed in and tested against Godot 3.2.
 
+## Installation
+Clone this repository or download it as ZIP. You only need to put `addons/explore-editor-theme` folder inside your project folder. ZIP already has only necessary files.
+
+Also available from AssetLib within the Editor: https://godotengine.org/asset-library/asset/557.
+
 ## Features
 This plugin consists of a single window, available from **Project > Tools** menu.
 
@@ -35,7 +40,5 @@ Styleboxes are previewed by being applied to a small `Panel`. A lot of them do n
 
 Constants are only displayed by their name in the list. Values can be viewed in the right-hand panel. It should be noted, that constants are always returned as `int`s, though sometimes they are used as `bool`s. Preview demonstrates both interpretations of the value.
 
-## Installation
-Clone this repository or download it as ZIP. You only need to put `addons/explore-editor-theme` folder inside your project folder. ZIP already has only necessary files.
-
-Also available from AssetLib within the Editor: https://godotengine.org/asset-library/asset/557.
+## License
+This project is provided under [MIT License](LICENSE).